Vaporizing type oil burner apparatus



Feb. 26, 1952 WOLLNER 2,587,078

VAPORIZING TYPE OIL BURNER APPARATUS Filed Jan. 22, 1949 2 Sl-lEETS-SHEET 1 INVENTOR. fiw/L fluA EK BY /Md%4 Feb. 26, 1952 P.WOLLNER 2,587,078

VAPORIZING TYPE OIL BURNER APPARATUS Filed Jan. 22, 1949 2 SHEETSSHEET 2[fl //1 I III/II, /I

Patented Feb. 26, 1952 UNITED STATES PATENT OFFICE VAPORIZING TYPE OILBURNER APPARATUS Paul Wollner, Wcehawken, N. J.

Application January 22, 1949, Serial No. 72.179

1 Claim. 1

This invention relates to a vaporizing type oil burner apparatus whichis constructed and arranged to generate vaporized fuel to permit thefull flow required to the main burner and to discontinue the flowthereof while continuing to generate the full supply of vaporized fuel.

The invention has in view to provide a vaporizing type burner apparatushaving a pilot burner arranged to project a flame axially of avaporizing coil for generating vapor in substantially constant pressureand volume together with means for regulating the flow thereof to themain burner.

Another object of the invention is to provide a burner apparatus of saidcharacter in which the pilot burner is arranged to operate at all timesat maximum efiiciency so as to avoid overheating or underheating of thecoil to thereby prevent the deposit of carbon soot on the coil.

A further object of the invention is to provide a vaporizing type burnerapparatus in which the main burner may be arranged in either fully on oroii condition or the same may be regulated to vary the size of theflame.

A further object of the invention is to provide an apparatus of saidcharacter including a condensing coil having an admission orifice equalin area to the orifice of the main burner for receiving and condensingthe vapor and returning the same to a return tank when the main burneris turned off.

With the foregoing and other objects in view, reference is now made tothe following specification and accompanying drawings in which thepreferred embodiments of the invention are illustrated.

I the drawings:

Fig. 1 is a schematic view showing parts in section of a vaporizing typeburner apparatus constructed in accordance with the invention.

Fig. 2 is a view in elevation of a burner apparatus constructed inaccordance with the invention and shown with the vaporizing coil and themain burner in position in a bituminous material melting apparatus.

Figure 3 is a sectional view of the fitting l8.

Fig. 4 is a sectional view of a three-way valve which is set to directthe flow of the vaporized fuel to the main burner and to shut off theflow to the condenser.

Fig. 5 is a similar view of the three-way valve which is set to direct aportion of the flow to the main burner and the remainder of the fiow tothe condenser.

Referring to the drawings by characters of reference and moreparticularly to the form of the invention shown in Fig. 1 of thedrawings, the

2 burner apparatus is of the type adapted to provide a torch-like flamebut it is to be understood that the main burner may be of any desiredcharacter to provide the required type of flame.

As illustrated, the apparatus includes a system indicated generally bythe reference character ID for generating hydrocarbon vapor underpressure and at substantially constant volume. The system also includesa fuel supply tank l2 adapted to contain hydrocarbon oil and the likewhich is under pressure therein to force the oil through the pipe linel3 to a vaporizing coil l4 consisting of a plurality of adjacentconvolutions l5 arranged within a cylindrical shell IS.

The pipe line I3 extends through an opening in the shell I6 adjacent theouter end thereof and is connected with the outermost convolution of thecoil M with the inner end of the coil connected by a pipe line H with afitting I8 having a pilot burner nozzle l9 located at the rear of theshell I6 and in axial alignment with the coil 14. The shell [6 isprovided with an open-ended pipe '20 which is afiixed to the rear wall2| thereof in forwardly spaced relation from the pilot nozzle IS.

The system also includes a standard three-wa valve 23. The three-wayvalve 23 is connected with the fitting ill by a short length of pipe 24and is formed with oppositely disposed outlets 25 and 26, the formerbeing connected by a pipe line 21 with the main burner nozzle 28 and theoutlet 26 being connected by a pipe line 29 with a condenser 30. Thecondenser 30 is connected by a pipe line 3| with a return tank 32 andwith a vapor trap 33 connected in said pipe line adjacent the tank 32.

The main burner nozzle 28 is attached to a conical shaped burner shell34 by means of arms 35 which mount the burner nozzle 28 in axialalignment and at the rear of an open-ended tube 36 projecting forwardlyfrom the rear wall 31 of said shell and with said shell arranged inparallel relation with the cylindrical shell IS with the open end 38 ofsaid conical shell 34 located slightly forwardly of the open end 39 ofthe cylindrical shell IS.

The pipe line I3 is provided with a strainer type fuel control valve 40for regulating the feeding of the fuel oil from the supply tank l2 tothe vaporizing 0011 I4, while the tank 12 is provided with a fuel supplyopening and means (not shown) for creating a pressure within the tank. Apipe line 4| may be arranged between the return tank 32 and the fuelsupply tank l2 for emptying the return tank 32 into the supply tank.

In use and operation hydrocarbon fuel oil is g forced by the pressurewithin the tank I 2 through the pipe line It to the forward end of thecoil M. the quantity of flow being regulated by the valve 40. The fuelis converted into vapor within thecoil It by the heat of the flame jetissuing from the pilot nozzle IS. The vaporized fuel issues from thecoil ll at substantially constant pressure and volume which flows intothe fitting l8 to supply the pilot nozzle I8 and from the fitting l8 thevaporized fuel flows through the three-way valve 23 to supply the mainburner nozzle 28 with the required flow thereof for the maximum lengthof the flame let. The threeway valve 23 is adapted to be regulated todirect the flow of the vaporized fuel to the main burner and to shut offthe flow to the condenser 30 as shown in Fig. 4. The valve 23 may bearranged to direct a portion of the flow through the pipe line 21 tovary the length of flame issuing from the main jet 28 and to direct theremainder of the fiow through the pipe line 28 to the condenser 80 asshown in Fig. 5. -The cross-sectional area of the inlet 43 of thecondenser 30 is equal to the cross-sectional area of the main burnernozzle 28 whereby either the main burner 28 or the condenser 30 willtake the full flow of the vaporized fuel issuing from the fitting l8 andthe cross-sectional area of the pilot nozzle l9 being constant the pilotburner operates at its maximum efliciency and will not deposit carbonsoot on the coils nor overheat nor underheat the same.

In Fig. 2 of the drawings the burner apparatus is illustrated inposition in a bituminous material melting apparatus. The meltingapparatus includes a container A comprising an insulated bottom wall B,side walls C, and a top wall D having a hinged cover E. Supported by thetop wall D is a rectangular shaped receptacle or well F with a fiue 49extending forwardly therefrom adjacent the bottom of the container. Theburner apparatus is arranged with a vaporizing coil 50 disposed within acylindrical shell and which coil and shell are arranged in verticalrelation within the receptacle F. The outlet 52 of the shell 5| and theoutlet 53 of the shell 54 of the main burner nozzle 55 are P sitioned atthe inner end of the flue 49 with the main burner nozzle 55 disposed forprojecting a flame longitudinally of said flue.

The forward end of the coil 50 is connected with a fuel supply tank 56by means of a pipe line 51 having a strainer type supply valve 58interposed in said pipe line. The vaporizing coil 50 is also connectedwith a fitting 59 having a pilot nozzle 50 disposed to project a flameaxial- 1y of the coil 50 and which fitting is connected with a standardthree-way valve 6| connected by a pipe line 62 with the main burnernozzle 55. The three-way valve BI is also connected by a pipe line 63with a condenser BI and by a pipe line 86 with a return tank 51, theconstruction of the burner apparatus being substantially similar to thatshown in the previous form of the invention.

There is thus provided a vaporizing burner apparatus of the torch typein which the generation of vaporized fuel is substantially constant involume and pressure when the main burner is in off or on condition andthe quantity of vaporized fuel generated is adequate to supply themaximum length of flame of the main burner and in which the setting ofthe regulating valve and the area of the orifice of the main burner andthe inlet orifice to the condenser determines the dew of vaporized fuelto the main burner and to the condenser.

In this form of the invention also the crosssectional area of the inlet68 of the condenser 64 is equal to the cross-sectional area of the mainburner 55 whereby either the main burner 55 or the condenser 54 willtake the full flow of the vaporized fuel issuing from the fitting 58through the valve 5| so that the cross-sectional area of the pilotnozzle 60 remains constant. The flow of the vaporized fuel through thepilot burner 60 being constant the same operates at its maximumefiiciency and will not deposit carbon soot on the coils 50, noroverheat nor underheat the same.

What is claimed is:

In a vaporizing type oil burner apparatus, a hydrocarbon vapor fuelgenerator including a coil for conducting liquid fuel and a burnerhaving an orifice of constant area for projecting a flame axially ofsaid coil for vaporizing the fuel therein, means to conduct fuel vaporfrom said coil to said burner orifice, a tank for containing fuel underpressure, means for conducting the fuel from the tank to the coil andfor regulating the quantity of flow thereof whereby vaporized fuelissuing from the orifice of said burner is of substantiaily constantpressure to thereby produce a flame of constant size for obtainingvaporized fuel of constant volume and pressure, a main burner having anorifice of constant area, a condenser having an inlet of constant area,a vapor fuel supply line leading from said vapor conducting means withbranches to said main burner and condenser, and a valve interposed insaid fuel supply line at the juncture of the branches therewith forproportioning the flow of the vaporized fuel from said vapor conductingmeans to said main burner and condenser.

PAUL WOLLNER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 745,799 Donnelly Dec. 1, 1903994,135 Eckels June 6, 1911 1,160,371 Brown Nov. 16, 1915 2,004,275Faccini et al June 11, 1935 2,094,908 Thrall Oct. 5, 1937 FOREIGNPATENTS Number Country Date 336,654 Great Britain Oct. 1'7, 1930

